<template>
  <div>
    <!-- 头部面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 头部面包屑导航 -->
    <!-- 卡片显示区域 -->
    <el-card>
      <!-- 警告框 -->
      <el-alert title="注意：只允许为第三级分类设置相关参数！"
                type="warning"
                :closable="false"
                show-icon>
      </el-alert>
      <!-- 警告框 -->
      <!-- 选择框 -->
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类：</span>
          <el-cascader v-model="selectCateKeys"
                       :options="catelist"
                       :props="cateProps"
                       @change="handleCateChange"
                       @visible-change="handleCateVisiableChange"
                       clearable></el-cascader>
        </el-col>
      </el-row>
      <!-- 选择框 -->
      <!-- tab 页签 -->
      <el-tabs v-model="activeName"
               @tab-click="onTabClicked">
        <el-tab-pane label="动态参数"
                     name="many">
          <el-button type="primary"
                     size="mini"
                     :disabled="isBtnDisabled"
                     @click="addDialogVisible = true">添加参数</el-button>
          <el-table :data="tableData.many"
                    border>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item, i) in scope.row.attr_vals"
                        closable
                        :key="i"
                        @close="handleTagClose(i, scope.row)">{{item}}</el-tag>
                <el-input class="input-new-tag"
                          v-if="scope.row.inputVisible"
                          v-model="scope.row.inputValue"
                          ref="saveTagInput"
                          size="small"
                          @keyup.enter.native="handleInputConfirm(scope.row)"
                          @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else
                           class="button-new-tag"
                           size="small"
                           @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称"
                             prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button size="mini"
                           type="primary"
                           icon="el-icon-edit"
                           @click="onEditClicked(scope.row)">编辑</el-button>
                <el-button size="mini"
                           type="danger"
                           icon="el-icon-delete"
                           @click="onRemoveClicked(scope.row)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性"
                     name="only">
          <el-button type="primary"
                     size="mini"
                     :disabled="isBtnDisabled"
                     @click="addDialogVisible = true">添加属性</el-button>
          <el-table :data="tableData.only"
                    border>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item, i) in scope.row.attr_vals"
                        closable
                        :key="i"
                        @close="handleTagClose(i, scope.row)">{{item}}</el-tag>
                <el-input class="input-new-tag"
                          v-if="scope.row.inputVisible"
                          v-model="scope.row.inputValue"
                          ref="saveTagInput"
                          size="small"
                          @keyup.enter.native="handleInputConfirm(scope.row)"
                          @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else
                           class="button-new-tag"
                           size="small"
                           @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称"
                             prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button size="mini"
                           type="primary"
                           icon="el-icon-edit"
                           @click="onEditClicked(scope.row)">编辑</el-button>
                <el-button size="mini"
                           type="danger"
                           icon="el-icon-delete"
                           @click="onRemoveClicked(scope.row)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
      <!-- tab 页签 -->
    </el-card>
    <!-- 卡片显示区域 -->
    <!-- 添加属性对话框 -->
    <el-dialog :title="'添加'+titleText"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="handleAddClose">
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="100px">
        <el-form-item :label="titleText"
                      prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="onAddOKClicked">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 添加属性对话框 -->
    <!-- 修改属性对话框 -->
    <el-dialog :title="'修改'+titleText"
               :visible.sync="editDialogVisible"
               width="50%"
               @close="handleEditClose">
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="100px">
        <el-form-item :label="titleText"
                      prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="onEditOKClicked">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改属性对话框 -->
  </div>
</template>

<script>
export default {
  created() {
    this.getCateList()
  },
  data() {
    return {
      catelist: [],
      selectCateKeys: [],
      cateProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      activeName: 'many',
      tableData: {
        many: [],
        only: []
      },
      addDialogVisible: false,
      editDialogVisible: false,
      addForm: {
        attr_name: ''
      },
      editForm: {
        attr_name: ''
      },
      addFormRules: {
        attr_name: [
          { required: true, message: '请输入内容', trigger: 'blur' }
        ]
      },
      editFormRules: {
        attr_name: [
          { required: true, message: '请输入内容', trigger: 'blur' }
        ]
      }
      // inputVisible: false,
      // inputValue: ''
    }
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        this.$msg.error(res.meta.status + res.meta.msg)
      }
      this.catelist = res.data
      // console.log(this.catelist)
    },
    handleCateChange() {
      // console.log(this.selectCateKeys)
      this.getParamsData()
    },
    async getParamsData() {
      if (!this.cateId) return
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
        params: { sel: this.activeName }
      })
      if (res.meta.status !== 200) {
        return this.$msg.error(res.meta.status + res.meta.msg)
      }
      res.data.forEach(item => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        item.inputVisible = false
        item.inputValue = ''
      })
      // console.log(res.data)
      this.tableData[this.activeName] = res.data
    },
    handleCateVisiableChange(v) {
      if (v) {
        document.querySelector('.el-cascader-panel').style.height = '200px'
      }
    },
    onTabClicked() {
      // console.log(this.activeName)
      this.getParamsData()
    },
    async onEditClicked(data) {
      // let attr_id = data.attr_id

      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes/${data.attr_id}`, {
        params: { attr_sel: this.activeName }
      })
      if (res.meta.status !== 200) {
        this.$msg.error(res.meta.status + res.meta.msg)
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    handleAddClose() {
      this.$refs.addFormRef.resetFields()
    },
    handleEditClose() {
      this.$refs.editFormRef.resetFields()
    },
    onAddOKClicked() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post(`categories/${this.cateId}/attributes`, {
          attr_name: this.addForm.attr_name,
          attr_sel: this.activeName
        })
        if (res.meta.status !== 201) {
          return this.$msg.error(res.meta.status + res.meta.msg)
        }
        this.$msg.success(res.meta.msg)
        this.getParamsData()
        this.addDialogVisible = false
      })
    },
    onEditOKClicked() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`, {
          attr_name: this.editForm.attr_name,
          attr_sel: this.activeName
        })
        if (res.meta.status !== 200) {
          return this.$msg.error(res.meta.status + res.meta.msg)
        }
        this.$msg.success(res.meta.msg)
        this.getParamsData()
        this.editDialogVisible = false
      })
    },
    async onRemoveClicked(data) {
      const result = await this.$confirm(`此操作将永久删除该${this.titleText}, 是否继续?`, '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if (result !== 'confirm') {
        return this.$msg.info('已取消删除！')
      }
      const { data: res } = await this.$http.delete(`categories/${this.cateId}/attributes/${data.attr_id}`)
      if (res.meta.status !== 200) {
        return this.$msg.error(res.meta.status + res.meta.msg)
      }
      this.$msg.success(res.meta.msg)
      this.getParamsData()
    },
    handleInputConfirm(data) {
      let str = data.inputValue.trim()
      if (str.length === 0) {
        data.inputValue = ''
        data.inputVisible = false
        return
      }
      data.attr_vals.push(str)
      this.sendAttrVals(data)
      data.inputValue = ''
      data.inputVisible = false
    },
    async sendAttrVals(data) {
      const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${data.attr_id}`, {
        attr_name: data.attr_name,
        attr_sel: data.attr_sel,
        attr_vals: data.attr_vals.join(' ')
      })
      if (res.meta.status !== 200) {
        return this.msg.error(res.meta.status + res.meta.msg)
      }
      this.$msg.success(res.meta.msg)
    },
    showInput(data) {
      data.inputVisible = true
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleTagClose(i, data) {
      data.attr_vals.splice(i, 1)
      this.sendAttrVals(data)
    }
  },
  computed: {
    isBtnDisabled() {
      return this.selectCateKeys.length !== 3
    },

    cateId() {
      if (this.selectCateKeys.length === 3) {
        return this.selectCateKeys[2]
      }
      return null
    },
    titleText() {
      if (this.activeName === 'many') {
        return '动态参数'
      }
      return '静态属性'
    }
  }
}
</script>

<style lang="less" scoped>
.cat_opt {
  margin: 15px 0;
}
.el-tag {
  margin: 10px;
}
.input-new-tag {
  width: 90px;
  margin-left: 10px;
}
.button-new-tag {
  margin-left: 10px;
}
</style>
